[j-nsp] J4350 dropping DNS packets, no filters applied to interfaces

[Alex Campbell]

>  Any filters on [edit forwarding-options family inet] level ?
Nope.  The only filter on the box is inbound on the device's loopback.

> Any recent changes prior to this incident?
No, it's a brand new device, we found this problem when we brought it up
in our production network :-(

Regards,

Alex



-----Original Message-----
From: Erdem Sener [mailto:erdems at gmail.com] 
Sent: Sunday, 24 June 2007 8:51 PM
To: Alex Campbell
Cc: juniper-nsp at puck.nether.net
Subject: Re: [j-nsp] J4350 dropping DNS packets, no filters applied to
interfaces

Hi Alex,

 Any filters on [edit forwarding-options family inet] level ? Any recent
changes prior to this incident?

Cheers,
Erdem

On 6/24/07, Alex Campbell <alex at dtdesign.com.au> wrote:
>
> Hi all,
>
> I'm seeing some strange behaviour on a J4350 running 8.2R2.4, and I'm 
> hoping someone can cast some light on what is going on.
>
> Any DNS traffic that passes from our network to our upstream is 
> dropped by the router.  All other traffic makes it through fine.  What

> makes this strange is that this still occurs even when I remove the 
> firewall filters from both of the interfaces.  I'm really not sure 
> what else could be causing the traffic to be dropped.
>
> Any thoughts would be most appreciated.
>
> Alex
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